:root{
  --bg: #0f172a;          /* slate-900 */
  --card: #111827;        /* gray-900 */
  --text: #e5e7eb;        /* gray-200 */
  --muted: #9ca3af;       /* gray-400 */
  --accent: #38bdf8;      /* sky-400 */
}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  background: radial-gradient(1200px 800px at 80% -10%, rgba(56,189,248,.15), transparent 60%), var(--bg);
  color:var(--text);
  display:flex;
  align-items:center;
  justify-content:center;
  padding:24px;
}
.container{
  width:100%;
  max-width:760px;
  background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,0));
  border:1px solid rgba(255,255,255,.08);
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
  border-radius: 20px;
  padding: 36px;
  text-align:center;
}
.logo{
  height:46px;
  width:auto;
  margin-bottom: 18px;
  filter: drop-shadow(0 3px 8px rgba(0,0,0,.35));
}
h1{
  margin: 6px 0 10px 0;
  font-size: clamp(28px, 3.8vw, 40px);
  letter-spacing: .3px;
}
p{
  margin: 0 0 18px 0;
  color: var(--muted);
  font-size: clamp(14px, 2vw, 16px);
  line-height: 1.6;
}
.badge{
  display:inline-block;
  padding:6px 10px;
  font-size:12px;
  letter-spacing:.3px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.12);
  color:var(--muted);
  background:rgba(255,255,255,.03);
}
.footer{
  margin-top:22px;
  font-size:12px;
  color: var(--muted);
  opacity:.8;
}
.btn{
  display:inline-block;
  margin-top:12px;
  padding:10px 16px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.1);
  text-decoration:none;
  color:var(--text);
  background:linear-gradient(180deg, rgba(56,189,248,.2), rgba(56,189,248,.05));
  backdrop-filter: blur(4px);
  transition: transform .08s ease;
}
.btn:active{ transform: scale(.98) }